Flash method heat conduction instrument

Abstract

The utility model discloses a flash method thermal conductivity meter which comprises a shell, a placement seat is arranged in the shell, a plurality of test cavities are formed in the top end of the placement seat, first quartz window pieces are fixedly arranged at the bottoms of the inner sides of the test cavities, and brackets are arranged at the top ends of the first quartz window pieces. The surface of each bracket is provided with a plurality of threaded holes, each threaded hole is internally provided with a threaded rod in a threaded manner, and one end of each threaded rod is fixedly connected with a knob. According to the flash method thermal conductivity meter, a sample is limited and clamped through the plurality of supporting rods, so that the stable proceeding of subsequent test operation is ensured; by rotating a plurality of knobs, a plurality of threaded rods are driven to rotate, so that a plurality of supporting rods are driven to move back and forth, the size of an area defined by the plurality of supporting rods is adjusted, and the device can adapt to test operation of samples of different sizes and is wider in application range.

Description

Technical Field

[0001] The utility model relates to the field of flash thermal conductivity instruments, in particular to a flash thermal conductivity instrument. Background Art

[0002] The Flash Thermal Conductivity (LFA) instrument is used to measure the thermal conductivity of materials. It is a type of transient thermal conductivity test method. Its basic principle is to use a laser source to instantaneously emit a light pulse, evenly irradiating the lower surface of a sample. The sample's surface absorbs the light energy, causing a transient temperature rise. This energy, acting as the hot end, transfers the energy to the cold end (upper surface) via one-dimensional heat conduction. By continuously measuring the corresponding temperature rise at the center of the sample's upper surface using an infrared detector, a curve showing the temperature rise (detector signal) versus time is generated. However, existing flash thermal conductivity instruments are not easily adaptable to testing samples of varying sizes, limiting their widespread applicability.

[0003] In order to solve the above problems, a flash thermal conductivity meter is proposed here. Utility Model Content

[0004] The purpose of the present invention is to provide a flash thermal conductivity meter to solve the problem in the above background technology that the test operation is not convenient for adapting to samples of different sizes, resulting in a limited scope of application.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flash method thermal conductivity meter, comprising a shell, a mounting seat is arranged inside the shell, a plurality of test cavities are opened on the top of the mounting seat, a first quartz window is fixedly arranged on the bottom of the inner side of the plurality of test cavities, a bracket is arranged on the top of the plurality of first quartz windows, a plurality of threaded holes are opened on the surface of the plurality of brackets, a threaded rod is threadedly arranged inside the plurality of threaded holes, a knob is fixedly connected to one end of the plurality of threaded rods, a plurality of ends of the threaded rods away from the knobs extend to the interior of the plurality of brackets and are rotatably connected to a rotating seat, a plurality of ends of the rotating seats away from the threaded rods are fixedly connected to a supporting rod, a thermal insulation ring is arranged on the top of the plurality of brackets, a through groove is opened on one side of the top of the shell, a mounting groove is opened on the top of both sides of the inner wall of the through groove, a sealing cover is slidably arranged between the two mounting grooves, and an infrared detector is fixedly installed in the middle of the sealing cover.

[0006] The sample is limited and clamped by several supporting rods to ensure the stability of subsequent test operations. By turning several knobs, several threaded rods are driven to rotate, thereby driving several supporting rods to move back and forth, and then the size of the area enclosed by the several supporting rods is adjusted. It can adapt to the test operations of samples of different sizes and has a wider range of applications.

[0007] Preferably, a fixing groove is provided on the inner side of the two placement grooves, an electric slide rail is fixedly provided inside the two fixing grooves, a sliding seat is slidably provided on one side of the two electric slide rails, and the two sliding seats are fixedly connected to the sealing cover. The two sliding seats are driven to move synchronously by the two electric slide rails, thereby driving the sealing cover to move forward and backward, thereby realizing automatic opening and closing of the sealing cover.

[0008] Preferably, a threaded groove is provided on the top of the inner side of several of the test cavities, a sealing seat is threadedly provided inside several of the threaded grooves, and a second quartz window is fixedly provided in the middle of several of the sealing seats. The test cavity can be sealed by the arrangement of the threaded groove and the sealing seat.

[0009] Preferably, an incident cavity is opened in the middle of the bottom end of the inner wall of several of the test cavities, and a laser generator is fixedly installed on the bottom of the inner side of two of the incident cavities, and the laser is emitted by the laser generator so that the laser is irradiated on the bottom of the sample.

[0010] Preferably, a control panel and a plurality of control buttons are fixedly mounted on the top of the front surface of the shell. The arrangement of the control panel and the plurality of control buttons facilitates the control of the coordinated work of the thermal conductivity meter.

[0011] Preferably, two inspection doors are hinged on the bottom of the front side of the shell, and auxiliary handles are fixedly provided on the front sides of the two inspection doors. The arrangement of the inspection doors facilitates the inspection of the thermal conductivity meter.

[0012] Preferably, the four corners of the bottom end of the shell are fixedly provided with anti-slip bases, and the bottoms of both sides of the shell are provided with heat dissipation windows, which facilitate heat dissipation of the thermal conductivity meter.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The sample is limited and clamped by several supporting rods to ensure the stability of subsequent test operations. By turning several knobs, several threaded rods are driven to rotate, thereby driving several supporting rods to move back and forth, and then the size of the area enclosed by the several supporting rods is adjusted. It can adapt to the test operations of samples of different sizes and has a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is a partial front cross-sectional view of the utility model;

[0017] Figure 3 It is an enlarged view of part A of the present utility model;

[0018] Figure 4 It is an enlarged view of part B of the present invention.

[0019] In the figure: 1. Shell; 2. Mounting seat; 3. Test cavity; 4. First quartz window; 5. Bracket; 6. Thermal insulation ring; 7. Threaded groove; 8. Sealing seat; 9. Second quartz window; 10. Incident cavity; 11. Laser generator; 12. Sealing cover; 13. Infrared detector; 14. Threaded hole; 15. Threaded rod; 16. Knob; 17. Rotating seat; 18. Support rod; 19. Mounting groove; 20. Fixed groove; 21. Electric slide rail; 22. Sliding seat; 23. Inspection door; 24. Auxiliary handle; 25. Control button; 26. Control panel; 27. Heat dissipation window; 28. Through groove; 29. ​​Anti-slip base. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] See also Figure 1-4 The utility model provides a flash method thermal conductivity meter, including a shell 1, a placement seat 2 is arranged inside the shell 1, a plurality of test cavities 3 are opened on the top of the placement seat 2, a first quartz window 4 is fixedly arranged on the bottom of the inner side of the plurality of test cavities 3, a bracket 5 is arranged on the top of the plurality of first quartz windows 4, a plurality of threaded holes 14 are opened on the surface of the plurality of brackets 5, a threaded rod 15 is threadedly arranged inside the plurality of threaded holes 14, a knob 16 is fixedly connected to one end of the plurality of threaded rods 15, an end of the plurality of threaded rods 15 away from the knob 16 respectively extends to the interior of the plurality of brackets 5 and is rotatably connected to a rotating seat 17, and an end of the plurality of rotating seats 17 away from the threaded rod 15 is fixedly connected It is connected to a supporting rod 18, and the tops of several brackets 5 are provided with insulation rings 6. A through groove 28 is provided on one side of the top of the shell 1, and the tops on both sides of the inner wall of the through groove 28 are provided with placement grooves 19. A sealing cover 12 is slidably provided between the two placement grooves 19, and an infrared detector 13 is fixedly installed in the middle of the sealing cover 12. The sample is limited and clamped by several supporting rods 18 to ensure the stability of subsequent test operations. By rotating several knobs 16, the several threaded rods 15 are driven to rotate, thereby driving the several supporting rods 18 to move back and forth, and then the size of the area enclosed by the several supporting rods 18 is adjusted, which can adapt to the test operations of samples of different sizes and has a wider range of applications.

[0022] A fixing groove 20 is provided on the inner side of each of the two placement grooves 19. An electric slide rail 21 is fixedly provided inside each of the two fixing grooves 20. A sliding seat 22 is slidably provided on one side of each of the two electric slide rails 21. Both sliding seats 22 are fixedly connected to the sealing cover 12. A threaded groove 7 is provided on the top of the inner side of each of the several test cavities 3. A sealing seat 8 is threadedly provided inside each of the several threaded grooves 7. A second quartz window 9 is fixedly provided in the middle of each of the several sealing seats 8. An incident cavity 10 is provided in the middle of the bottom end of the inner wall of each of the several test cavities 3. A laser generator 11 is fixedly installed at the bottom of the inner side of each of the two incident cavities 10.

[0023] When in use, the two electric slide rails 21 drive the two sliding seats 22 to move synchronously, thereby driving the sealing cover 12 to move back and forth, thereby realizing automatic opening and closing of the sealing cover 12. The setting of the threaded groove 7 and the sealing seat 8 can seal the test cavity 3, and the laser is emitted by the laser generator 11 so that the laser is irradiated on the bottom of the sample;

[0024] A control panel 26 and several control buttons 25 are fixedly mounted on the top of the front of the housing 1. Two inspection doors 23 are hinged at the bottom of the front of the housing 1. Auxiliary handles 24 are fixedly provided on the front of each inspection door 23. Anti-slip bases 29 are fixedly provided at the four corners of the bottom end of the housing 1. Heat dissipation windows 27 are provided at the bottom of both sides of the housing 1.

[0025] During use, the control panel 26 and the plurality of control buttons 25 facilitate the control of the coordinated operation of the thermal conductivity meter. The maintenance door 23 facilitates the maintenance of the thermal conductivity meter. The heat dissipation window 27 facilitates the heat dissipation of the thermal conductivity meter.

[0026] When the embodiment of the present application is in use: the sealing seat 8, the insulation ring 6 and the bracket 5 and other structures are removed, and then the sample is placed in the bracket 5, and the sample is limited and clamped by a number of support rods 18 to ensure the stability of subsequent test operations, and then the bracket 5 is placed in the test cavity 3, and then the insulation ring 6 is put in, and finally the sealing seat 8 is covered, and then the sealing cover 12 is controlled to be closed, and the laser generator 11 is used to emit laser so that the laser irradiates the bottom of the sample. At the same time, the corresponding temperature rise process of the center part of the upper surface of the sample is continuously measured by the infrared detector 13, and a curve of the relationship between the temperature rise and time can be obtained. During operation, by rotating a number of knobs 16, a number of threaded rods 15 are driven to rotate, thereby driving a number of support rods 18 to move back and forth, and then the size of the area enclosed by the number of support rods 18 is adjusted, which can adapt to the test operation of samples of different sizes and has a wider range of applications.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flash thermal conductivity instrument comprising a housing (1), characterized in that: A mounting seat (2) is provided inside the housing (1), a plurality of test cavities (3) are provided at the top of the mounting seat (2), a first quartz window (4) is fixedly provided at the bottom of the inner side of a plurality of the test cavities (3), a bracket (5) is provided at the top of a plurality of the first quartz window (4), a plurality of threaded holes (14) are provided on the surface of a plurality of the brackets (5), a threaded rod (15) is threadedly provided inside a plurality of the threaded holes (14), a knob (16) is fixedly connected to one end of a plurality of the threaded rods (15), and a plurality of the threaded rods (15) are away from each other. One end of the knob (16) extends to the interior of a plurality of brackets (5) and is rotatably connected to a rotating seat (17). One end of the plurality of rotating seats (17) away from the threaded rod (15) is fixedly connected to a supporting rod (18). The top of the plurality of brackets (5) is provided with a heat insulating ring (6). A through groove (28) is provided on one side of the top of the shell (1). The tops of both sides of the inner wall of the through groove (28) are provided with mounting grooves (19). A sealing cover (12) is slidably provided between the two mounting grooves (19), and an infrared detector (13) is fixedly installed in the middle of the sealing cover (12).

2. The flash thermal conductivity instrument according to claim 1, characterized in that: A fixing groove (20) is provided on the inner side of each of the two placement grooves (19), an electric slide rail (21) is fixedly provided inside each of the two fixing grooves (20), a sliding seat (22) is slidably provided on one side of each of the two electric slide rails (21), and both of the sliding seats (22) are fixedly connected to the sealing cover (12).

3. The flash thermal conductivity instrument according to claim 1, characterized in that: The tops of the inner sides of several test cavities (3) are provided with threaded grooves (7), the interiors of several threaded grooves (7) are provided with sealing seats (8) in a threaded manner, and the middles of several sealing seats (8) are fixedly provided with second quartz windows (9).

4. The flash thermal conductivity instrument according to claim 1, wherein: An incident cavity (10) is provided in the middle of the bottom end of the inner wall of each of the test cavities (3), and a laser generator (11) is fixedly installed at the bottom of the inner side of each of the two incident cavities (10).

5. The flash thermal conductivity instrument according to claim 1, characterized in that: A control panel (26) and a plurality of control buttons (25) are fixedly mounted on the top of the front side of the housing (1).

6. The flash thermal conductivity instrument according to claim 1, characterized in that: Two inspection doors (23) are hingedly connected to the bottom of the front side of the housing (1), and auxiliary handles (24) are fixedly provided on the front sides of the two inspection doors (23).

7. The flash thermal conductivity instrument according to claim 1, characterized in that: The four corners at the bottom of the shell (1) are all fixedly provided with anti-skid bases (29), and the bottoms of both sides of the shell (1) are provided with heat dissipation windows (27).

Images